SonoSite C1.9 PLUS, Руководство по обслуживанию

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52 C1.9 PLUS Ultrasound System Service Manual
7.3 Trackball
7.3.1 Required Parts
Service Assembly, Trackball, C1.9 (P02088)
7.3.2 Required Tools
• A #1 Phillips screwdriver, 7.0 in. (17.8 cm / 177.8 mm)
• A torque driver, 2.0–10.0 in./lb (0.2–1.1 newton meter)
• A small, blunt punch
• An anti-static mat
• A wrist grounding strap
• CAUTION: Always use correct ESD procedures. ESD damage is cumulative
and may not be noticeable at first. Initial ESD symptoms may be slightly
degraded performance or image quality.
7.3.3 Removing the Trackball
1. Press the battery release on the lower right side of the system to remove the
system battery.
2. Remove the two screws in the battery compartment using a #1 Phillips
screwdriver; this releases the Control Panel Subassembly from the top housing
(Figure 7.8).
3. Insert an anti-static mat between the Control Panel Subassembly and the display
LCD to prevent damaging the display LCD.
4. Lay the Control Panel Subassembly over onto the display LCD to expose the
wire harness and flex circuits.
5. Carefully disconnect the 100-pin flex circuit from the bottom module.
6. Disconnect the display wire harness and the two 40-pin flex circuits from the
Control Panel Subassembly.
7. Remove the Control Panel Subassembly.
8. Remove the trackball retaining ring. Carefully insert the tip of a blunt punch into
the indent and turn the trackball retaining ring slightly counterclockwise. This
releases the ring and allows you to remove it (Figure 7.9).